August hildt



(No Model.) 2 Sheets-Sheet 1. A. HILDT.

QUILTING MACHINE.

No. 343,029. Pgtented June 1, 1886.

N. PETERS. PhnIo-Lilhogmpher, Walhinghm n c.

7 (No Model.) 2 She-ts- Sheet 2.

A. HILDT.

QUILTING MACHINE.

No. 343,029. Patented June 1, 1886.

OOOOQOOOOO WAN N. PEIERS. FhnlwLilhngr-upher. Wishinglnm I). c.

v UNITED STATES PATENT OFFICE.

Anensr HILDT, on NEW YORK, N. Y., ASSIGNOR TO L. DRYFOOS & 00., OF SAMEPLACE.

QUILTING=MACHINE.

SPECIFICATION forming part of Letters Patent No. 343,029, dated June1,1886.

Application filed December 29, 1885.

To all whom it may concern:

Be it known that 1, AUGUST HILDT, of the city, county, and State of NewYork, have invented certain new and useful Improvements inQuilting-lllachines, of which the following is a specification.

My invention relates to that class of sewing-machines for quiltingfabrics in which are employed two transverse rows of needles, theneedles in the rear row being arranged so as to stand directly behindtheir corresponding needles in the front row; and it has referenceparticularly to the construction and arrangement of the shuttle-racesfor containing the shuttles which cooperate with the needles inperforming the stitching operation, and to the combination therewith ofthe shuttle-drivers and actuating mechanism therefor, the object beingto bring these devices conveniently, and without impairing theirefflciency, into a compact form which will permit the parallel zigzagrows of stitching to be brought much nearer together, so as to make afiner pattern than heretofore has been produced by quiltingmachines ofthe kind specified.

The nature of my improvements can best be explained and understood byreference to the accompanying drawings, in which Figure 1 is an endelevation, partly in section, of that portion of a quilting machineembodying my invention. Fig. 2 is a plan of the same, with the centralportion of the skeleton needle bar broken away, and also with all of thebars which form both the shuttle-races and shuttle-plates removed,excepting a few of the central ones. Fig. 3 is a 1011- gitudinal sectionthrough the center of a portion of one of the shuttle-races, showing theshuttles and their drivers in elevation.

In the drawings, A is so much of the supporting frame-work as needed forthe purpose of illustration.

B-is the skeleton needle-bar, to which ver' tical reciprocatory movementis imparted in the usual way.

At 1) are shown the jointedlowercnds of the connecting-rods, whichextend from the driving crank-shaft for the same, and at b arerepresented the guide-rods, which are intended to slide, ascustomary,'in vertical sleeve-bear- Serial No. 187,021. (No model.)

ings in the frame of the machine, so as to assure the movement of theneedle-bar in the proper path.

At 1) are represented the front and rear rows of grooves in which theneedles are se cured, two of said needles being seen at b in Fig. l. Thegrooves are so located that the needles in the rear row will be directlybehind the corresponding needles in the frontv row.

I proceed now to describe those parts in which my invention iscomprised. The shuttle-boX is formed of front'and rear cross-rails, O,grooved at 0 for the reception of the ends of the parallel bars D, whichrest on said rails. The rails O are stationary, being secured to theframe of the machine in suitable position, and the endsof the bars D areby proper means secured in their seats in the rails C. These bars format once the shuttleraces and shuttle-plates, each having one flat smoothside, (2, and having on the opposite side a concave form, as indicatedat d. The shuttle-plate is the fiat smooth face of the bar, againstwhich the fiat side of the shuttle runs, and in this face, at'properintervals apart, are formed the two vertical needlegrooves (1 which areto be entered by the descending pair of needles, which co operate withthe two shuttles in the shuttle-race,

bounded on one side by the said shuttle-plate.

The bars are placed parallel to one another, with the flat face of oneadjoining the concave face of the next, the two faces forming eonjointlya shuttle-race in which the shuttles can fit, and the longitudinal spaceseparating the two constituting a slot, 0, through which the shanks ofthe shuttle-drivers can pass.

In each shuttlerace are placed two shuttles, E, the one directly in therear of the other,-set at proper intervals apart in reference to the twoneedle-grooves d in said race to fittingly cooperate, respectively, withthe needles which enter said grooves.

Below the shuttle-race bars D are the horizontal reciprocatorys'huttle-driver-carrying bars F F, which extend crosswise of theshuttle-boX and at their endsare made fast to horizontal rods G,supported and adapted to slide back and forth in bearings g, attached tosome suitable stationary part of the machine. Each shuttle hasits owndriver, H, formed as shown in Figs. 2 and 3. The drivers of the rear rowof shuttles are attached to the rear bar, F, and those of the front rowof shuttles are attached to the front bar, F, both bars being connectedto the same slide-rods, so that these instrumentalities constitute as awhole a sliding frame, which imparts like motion to both sets ofshuttles. The drivers are attached to their bars F F in the mannerindicated in Fig. 3, the shank h on the driver passing down through theslot 0, and being formed at its lower end into a screw-threaded stem, h,which passes through a hole, f, in the carrier-bar F, and is held inplace by a nut, 7L2, screwed onto it from below the bar. The sliderods Gare reciprocated by means of arms I, having forked upper ends,whichstraddle pins 9, laterally projecting from the slide-rods, and at theirlower ends are fast to a roek-shaft, J, supported in suitable bearingsin the frame of the machine. To one of the arms I is jointed thepitn'ian K, which at its other end is to be connected to an eccentric onthe driving-shaft of the machine. The vibratory movement thus impartedto the one arm I is imparted to the other arm I on the opposite side ofthe machine through the intermediary of the rock-shaft J.

In all cases heretofore of which I have knowledge in which the needlesof the two rows have been placed so that each needle of the front rowhas a needle in the rear row directly behind it it has been the practiceto arrange the two shuttles for these needles one on each side of ashuttle-plate, so that there will be but one shuttle in each race. Thismultiplies the number of races required, and also prevents the shuttlesin row from being brought as near together as is necessary to producefine work.

Under my improvement each race contains two shuttles, each of which hasits own driver, and the parts are so arranged as to bring them togetherin the most compact form,while maintaining unimpaired their efiiciencyof action, and giving them capacity for doing a kind of work which hasnot hitherto been obtained in machinery of the class specified. It willbe noted that the bars I as well as the two arms of the needle-bar inwhich the rows of needles are respectively carried, are arranged onlines which are radial. This is due to thefact that the particularmachine of which the devices represented form part was designed to beused for quilting conical or tapering skirts, &c. For quilting straightgoods, the devices in question will be parallel to each other.

Having described my improvements i n q u ilting-maehines, what I claimas new, and desire to secure by Letters Patent, is as follows:

The combination of a needle-bar having two rows of needles placed sothat the needles in the rear row shall stand directly behind theircorresponding needles in thefront row, the bars D, having one flat andone concave face.

with two vertical needle-grooves, (F, in the flat face, and placedtogether in the manner descri bed,to form a series of slotted shlittle-races, two shuttles in each race, drivers for said sh u t tles,and asliding reciprocatory frame to which said drivers are attached, andby which they are reciprocated, the parts being constructed and arrangedrelatively to one another substantially as and for the purposeshereinbefore set forth.

In testimony whereof I have hereunto signed my name this 22d day ofDecember, 1885.

AUGUST HILDT. Vitnesses:

ABRAHAM HAFER, E. A. ST. JOHN.

